# Byeori — A brain that thinks with you

> A brain that thinks with you (iPhone/iPad app by WOOCHEOL SHIN.)

- Source: https://appshunter.io/ios/app/byeori/id6771674899 (this page in markdown: same URL + `.md`)
- Developer: [WOOCHEOL SHIN](https://appshunter.io/developer/6771659880)
- Category: Productivity, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 36 MB
- Languages: American English, Korean
- Released: 2026-10-06
- Data updated: 2026-10-28

## What is Byeori?

Byeori isn't a notebook. It's a brain that thinks as you write — and speaks first.

Note apps only store. Chatbots only answer when asked. And in the moment you need it, nothing comes to you. Byeori is different — you just capture, and the brain does the thinking.

■ Mirror — it reflects you back
As you write, the brain draws the gap between who you think you are and what your notes actually say. Not from anyone else — from your own words.

■ Today's Provocation — it names the two voices inside you
"I must be perfect to start," and yet "I only improve by shipping." It surfaces a contradiction you couldn't see, with the exact sentences behind it.

■ Connections that come first — it links before you ask
Forgotten notes, two ideas that quietly touch — the brain surfaces them for you. No search terms to remember.

■ Grounded in your notes, not hallucinations
It extracts atoms (claims, self-descriptions) from your writing, finds opposite polarity on the same concept, and recalls what's semantically scattered. It never speaks without evidence.

■ Near-zero friction to capture
By hand or by voice, the moment it strikes. A one-line journal becomes a habit, and the same brain grows on your phone and on the web.

■ Start today in three sentences
No need to write a lot. Answer three prompts and within minutes the brain speaks to you for the first time. Write more, and new axes open — mood, trajectory, self-gap.

Write → the brain reflects → you write more → the brain deepens.

For everyone who thinks. Wake up your second brain with three sentences today.

## Is Byeori safe?

Not enough ratings yet to assess Byeori.

## Is Byeori legit?

Byeori has limited verification signals. The AppsHunter Legitimacy Score for Byeori is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-10-27

Getting started is simpler. New installs open on sign-up, your first read now shows how your notes connect, and screens stay quiet until you've written a few notes. You can also get an optional evening reminder to add one line.

### 1.0.0 — 2026-10-06

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-28.*